AHU discharge air temperature reset strategy according to outdoor air temperature

Min Kyeong Park, Won Hee Kang, Chul Ho Kim, Jong Man Lee, Kwang Ho Lee

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Abstract

In Korea, the building sector is implementing a strategy to reduce greenhouse gas emissions by about 65 million tons by strengthening the energy standards for new buildings built from 2030 and activating green remodeling of existing buildings. Therefore, in this study, instead of the simple fixed control method, which is one of the VAV methods used in most office buildings to reduce building energy, AHU(Air handling unit) DAT(Discharge air temperature) set-point reset based on outdoor air temperature will be studied to change the AHU discharge air temperature proportionally according to the continuously changing outdoor air temperature. The simulation tool used in this study is EnergyPlus. In order to implement the AHU DAT Set-point reset based on outdoor air temperature, the setting value is assigned to Case1 and Case2 through EnergyPoint's SetpointManager:OutdoorAirReset Object. As a result of comparing the simple fixed control and the AHU DAT set-point reset based on outdoor air temperature, Case 1, which had a broader outdoor temperature range for the AHU DAT set-point reset between the two cases, realized more energy saving in summer than conventional control method and Case 2.

Original languageEnglish
Title of host publication16th Conference of the International Society of Indoor Air Quality and Climate
Subtitle of host publicationCreative and Smart Solutions for Better Built Environments, Indoor Air 2020
PublisherInternational Society of Indoor Air Quality and Climate
ISBN (Electronic)9781713823605
Publication statusPublished - 2020
Event16th Conference of the International Society of Indoor Air Quality and Climate: Creative and Smart Solutions for Better Built Environments, Indoor Air 2020 - Virtual, Online
Duration: 2020 Nov 1 → …

Publication series

Name16th Conference of the International Society of Indoor Air Quality and Climate: Creative and Smart Solutions for Better Built Environments, Indoor Air 2020

Conference

Conference16th Conference of the International Society of Indoor Air Quality and Climate: Creative and Smart Solutions for Better Built Environments, Indoor Air 2020
CityVirtual, Online
Period20/11/1 → …

Keywords

  • AHU (Air handling unit)
  • AHU discharge air temperature
  • Cooling energy
  • Energy plus
  • Outdoor air temperature compensation control
  • Variable air volume

ASJC Scopus subject areas

  • Building and Construction
  • Computer Science Applications
  • Health, Toxicology and Mutagenesis
  • Pollution

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